Inhaling device



Sept. 11, 192s. 1,683,686

, J. W. MCMILLAN INHALING DEVICE Filed Nov. 20, 1926 /N VENTUR glow/v WMWILLAN f ATTURNEX Patented Sept. l1, 1,928.

,UNITED STATES JoHN W. MGMILLAN, or MUNCIE, INDIANA.

INHALIN'Gl DEVICE.`

Application filed ylil'ovember 20, 1926. Serial No. 149,580.

This invention relates :to improvements in inhaler devices intended to facilitate anes thetizing. l

To simplify and facilitate theladministration of anestheties, by inhalation, and to accomplish the anesthetization of the patient in a relatively short period of time, and without danger or undue discomfort .or inconvenience to the patient, is the general object of the present invention. More specie purposes of the invention are toprovide a device ot thekind described which is light in Weight, dependable and easy to use, and which occupies relatively smallspace,is`easy to sterilize and cleanse, and is economical oit manufacture.

An object of lthe invention is the. provii sion of an inlet dev-ice for introducing anesthetics intol a statel to be inhaled, so ar ranged that no injurious yparticles of the anesthetic will .pass directly to the inhaling4 chamber or cap.

A further object. of the invention is the' provision otl an adjustable connection between parts ot thedevice, whereby an adjustment may be made for supplying fresh air to the anesthetic under certain` conditions.

bt is also an `object to provide a. swivel jointV between the mouth piece and the remainder of the device, tomeet the position ot thepatients iacewithout correspondingly Vtilting-r the apparatus. as Whole.

The' objects of `my invention are accomplished by, and-the-inventioniis embodied in the new construction, combination and arrangement oiparts described in the following, spcciiication,.and. illustrated in the accompanying drawings; The invention is de- {ired inthe appended claims.

The several parts ofmy, improved-inhaler device are identified by' suitable characters of reference appliedztoiltihem inthe different views in the drawings,1in,\vhich- Figure lis a front View ofmy improved inhaler device, portions thereot being shown in section. l f y FigureQ isA atopgplan. view-of Figure 1, a portion'of the mouthcap; andv conduit being broken away.v

VMy invention contemplates the combinationandiarrangement of a mouth cap or face piece forming an inhaling chamber, auair tight-bag, and a conduit extended from the mouthy eapinto the'bagrand having its end portion of open formation and adapted to retain therein, a quota of absorbent material andv an air tube entendedinto the conduit. Structural `features consist of the conduit being ori' divided' formation, its body portion 'being bent at an angle and having perforations in its walls for a. closure piece for the.f itree end otthe conduit, and a neck element Afor said bag, having close litt-ing but removable` engagement with said cond-uit. Y

The invention, in the embodiment shown in the drawings, constitutes an inhaler de-:V vice of the Yform, dimensions, and capacity suitable tor all general purposes ofthe practitioner, iior` minor or major operations; the mouth cap being about tive inches in length, the conduit about one inch in diameter, and` the bagbeing about seven' inches by eleven inches in. size.

The convex or cup like bodyl A ot' gthe mouth. cap may be made of `aluminum,its oval' shapedl base` portion ,has the marginal. fiange or lip A to Which'is joinedv'the usual flexible pneumatici rimB. o The Wall structure ot the bagconsists of anouter ply C of light sheet rubber, and an inner sheet `D ot closely Woven linenlor other.teXtile'unit-ed` thereto.;v the bagthus being flexible andthe rubber body sheet thereof being protected trom any possible chemical effec-ts of thev vapor contents oi the bag.-` The neck por- Vtion ofthebag is securely retained in a sui-t able eounterbore .therefor in the metal neck ring E. The conduit extends from the mouth cap and through the sa-idyneckring and into the bag, andis ot dividediormaf tion, and consits of a `foot piece F and arm. piece G. Theseconduit' pieces mayfbev made of light brass tubing4 and finished in nickel plate. The arm pi'eceG is adapted to-.rest inv movable close fitting. engagement with the end portion Fand. annular shoulder F2 of theiioot piece.` The free end portion of the arm piece isbent at substantially a right angle Vto. the body portion thereof, and is provided with-iprn'iorationslr or openings Gr', and is closed by a removable plugor cork HL At the bent portion of said arm piece is a boss-G2 in Whichlislseatedan inlet' pipe K. This pipe extends suitably beyond the bility ot any liquidxvhiclifrnaybe admitted into the pipe, beingfconducteddirectly into the body portionlvot' the conduit, that leads to thehmouth cap or inhaling chamber, thus guarding against any particles ofthe anesthetic, other than the fumes thereof, being breathed by the patient. Coneurrently with the volatilization of the gas in the conduit, there is the mixing with same, of a suitable amount of oxygen drawn thereinto by the respiratory action of the patient. The machine bored neck E has close fitting but movable engagement With the end portion of the arm piece G so that the arm piece may be adjusted vertically for bringing certain of the openings G above the neck E, thus permitting aditional fresh air to enter directly in contact with the anesthetic, which is very essential in controlling the composition of the anesthetic to obtain the proper result, under the use of different anesthetics and varying conditions ofdiiierent patients, it being understood that the end portion F and the arm piece G form a swivel joint by which the perforated wing of said arm piece Y and the inlet pipe K may be positioned, somewhat vertically, regardless of the various angles at which the mouth cap may be adjusted to suit different conditions.

The advantages afforded by the simple and efiieient construction described are apparent. The several parts besides being extremely economical of manufacture, are easy to assemble or 4disassemble, are not liable to derangement, and are capable of being thoroughly sterilized andV cleansed.

The invention in readiness for use, appears as shown in Figure l, a quota of gauze or cotton having been disposed in the end portion of the arm piece Gr and the cork H having been inserted; and the bag having been placed with its neck ring E in engagement with the said arm piece. To practice the invention, the mouth cap is placed in position over the patients mouth, the operator holding the arm piece Gr at such angle as may be most convenient. For minor operations requiring only a short period of time, a small quantity of chlorid ofethal is sprayed into the inlet pipe K and which finds lodgment in the absorbent material which is retained in the perforated or foraminous portion of the arm piece. The respiratory action of the patient has such effect, that within a relatively few inhalations of the vapor contents ofthe conduit and mouth cap,-about six toeight-the patient will be in a state of complete anesthesia. Any possible excess of liquid which may be absorbed in the arm piece settles therein, so that there is no possibility of contact with the face of any irritating element. By my invention it is thus possible for the patient to become anesthetized Without experiencing the choking, depressing and sickening effects incident to the use o ordinary inhaling devices.

Where a major operation is to be pering thoroughly sterilized and cleansed, and;

occupy relatively small space.

I amr aware that minor changes may be made 1n the structural features and detalls ol' my inhaler device, within the scope of j the invention as same is defined by the nppended claims, without departing from the spirit of the invention or sacrificing any of its advantages.

lVhat I claim as my invention, and desire to secure by Letters Patent, is-

1. In an inhaling device, an inhaling chamber, a hollow foot piece extending from the same in a plane parallel with the open face of the chamber, a substantially L- shaped hollow arm, one end of which has a fittingand rotatably adjustable union with the foot piece and the opposite end having a plurality of openings in longitudinal series therethru, an air-tight bag into which the perforated end of said hollow arm is adjustably mounted to ex Jose a variable area of air openings, whereby a greater or less amount of air may be added to the inhaling medium, and an inlet pipe extending downwardly thru the horizontal portion of the hollow arm substantiall centrally of the vertically extending portion of said arm and to a point below the hollow of the horizontal portion of the arm, and above the lower end of the vertical portion.

2. An inhaler device for anesthetizing, comprising a mouth cap; a flexible air-tight bag; a neck ring for said bag; a conduit foot-piece extended from said mouth cap; a conduit arm piece having an L-shaped bend therein and being removably and swingingly united with said foot piece for rotative alignment of the mouth cap, the end portion of saidarm piece being adapted to be passed thru and to be retained removably and slidably adjustable in the neck ring of the bag, and having a series of perforations longitudinally of the arm-piece in the walls thereof; a removable closure plug for said arm piece end portion; and an inletpipe in the bend of sald conduit arm piece extended to a location beyond the line of the bend of said arm piece.

JOHN W. MCMILLAN. 

